Added php-formatter as dependency

* Also added .formatter.yml file

.formatter.yml

@@ -0,0 +1,7 @@
+use-sort:
+    group:
+        - _main
+        - Mmoreram
+    group-type: each
+    sort-type: alph
+    sort-direction: asc

composer.json

@@ -30,7 +30,8 @@
         "symfony/finder": ">=2.1"
     },
     "require-dev": {
-        "phpunit/phpunit": ">=3.7"
+        "phpunit/phpunit": ">=3.7",
+        "mmoreram/php-formatter": "~1.0"
     },
     "target-dir": "Mmoreram/GearmanBundle",
     "autoload": {